diff --git a/config/config.md b/config/config.md
index a8f108ca53..40272ddcfd 100644
--- a/config/config.md
+++ b/config/config.md
@@ -96,7 +96,7 @@
 | `wal.sync_write` | Bool | `false` | Whether to use sync write.<br/>**It's only used when the provider is `raft_engine`**. |
 | `wal.enable_log_recycle` | Bool | `true` | Whether to reuse logically truncated log files.<br/>**It's only used when the provider is `raft_engine`**. |
 | `wal.prefill_log_files` | Bool | `false` | Whether to pre-create log files on start up.<br/>**It's only used when the provider is `raft_engine`**. |
-| `wal.sync_period` | String | `10s` | Duration for fsyncing log files.<br/>**It's only used when the provider is `raft_engine`**. |
+| `wal.sync_period` | String | `5s` | Duration for fsyncing log files.<br/>**It's only used when the provider is `raft_engine`**. |
 | `wal.recovery_parallelism` | Integer | `2` | Parallelism during WAL recovery. |
 | `wal.broker_endpoints` | Array | -- | The Kafka broker endpoints.<br/>**It's only used when the provider is `kafka`**. |
 | `wal.connect_timeout` | String | `3s` | The connect timeout for kafka client.<br/>**It's only used when the provider is `kafka`**. |
@@ -529,7 +529,7 @@
 | `wal.sync_write` | Bool | `false` | Whether to use sync write.<br/>**It's only used when the provider is `raft_engine`**. |
 | `wal.enable_log_recycle` | Bool | `true` | Whether to reuse logically truncated log files.<br/>**It's only used when the provider is `raft_engine`**. |
 | `wal.prefill_log_files` | Bool | `false` | Whether to pre-create log files on start up.<br/>**It's only used when the provider is `raft_engine`**. |
-| `wal.sync_period` | String | `10s` | Duration for fsyncing log files.<br/>**It's only used when the provider is `raft_engine`**. |
+| `wal.sync_period` | String | `5s` | Duration for fsyncing log files.<br/>**It's only used when the provider is `raft_engine`**. |
 | `wal.recovery_parallelism` | Integer | `2` | Parallelism during WAL recovery. |
 | `wal.broker_endpoints` | Array | -- | The Kafka broker endpoints.<br/>**It's only used when the provider is `kafka`**. |
 | `wal.connect_timeout` | String | `3s` | The connect timeout for kafka client.<br/>**It's only used when the provider is `kafka`**. |
diff --git a/config/datanode.example.toml b/config/datanode.example.toml
index 4a2e21595d..3426630d7b 100644
--- a/config/datanode.example.toml
+++ b/config/datanode.example.toml
@@ -161,7 +161,7 @@ prefill_log_files = false
 
 ## Duration for fsyncing log files.
 ## **It's only used when the provider is `raft_engine`**.
-sync_period = "10s"
+sync_period = "5s"
 
 ## Parallelism during WAL recovery.
 recovery_parallelism = 2
diff --git a/config/standalone.example.toml b/config/standalone.example.toml
index d8a2deca24..d256d681f9 100644
--- a/config/standalone.example.toml
+++ b/config/standalone.example.toml
@@ -277,7 +277,7 @@ prefill_log_files = false
 
 ## Duration for fsyncing log files.
 ## **It's only used when the provider is `raft_engine`**.
-sync_period = "10s"
+sync_period = "5s"
 
 ## Parallelism during WAL recovery.
 recovery_parallelism = 2
diff --git a/src/cmd/tests/load_config_test.rs b/src/cmd/tests/load_config_test.rs
index bdbaf720b7..aa1d98cf4b 100644
--- a/src/cmd/tests/load_config_test.rs
+++ b/src/cmd/tests/load_config_test.rs
@@ -103,7 +103,7 @@ fn test_load_datanode_example_config() {
             }),
             wal: DatanodeWalConfig::RaftEngine(RaftEngineConfig {
                 dir: Some(format!("{}/{}", DEFAULT_DATA_HOME, WAL_DIR)),
-                sync_period: Some(Duration::from_secs(10)),
+                sync_period: Some(Duration::from_secs(5)),
                 recovery_parallelism: 2,
                 ..Default::default()
             }),
@@ -336,7 +336,7 @@ fn test_load_standalone_example_config() {
             auto_create_table: true,
             wal: DatanodeWalConfig::RaftEngine(RaftEngineConfig {
                 dir: Some(format!("{}/{}", DEFAULT_DATA_HOME, WAL_DIR)),
-                sync_period: Some(Duration::from_secs(10)),
+                sync_period: Some(Duration::from_secs(5)),
                 recovery_parallelism: 2,
                 ..Default::default()
             }),